broke a bolt off in the block

[ECU PIRATE]

Well........what a f'Ing day............me and my buddy tried to put the 350 up on the stand. Got the wrong size bolts first trusting Dad's measurements. Got the right size and then snapped the bolt off in the block right above the oil filter adapter. Left about a 1/4 " outside of the block........safe to say I am more than pissed off since I have waited over a year and a half to get to this point. Any ideas?????? Weld a nut to the thread or drill it out and re-tap the thread????? I am tempted just to throw the whole motor in the back of my Dad's rig and let him take it to the shop and play with it........ I hate my life right now!!!!!!!!!!!!!!!

[S10Fan]

Are you able to get a good bite with some vice grips?

[1BadSS]

Take a grinder, grind two flat spots on the "stud" so your vise grips will have a good spot to grab onto and wrench it out. It isn't the end of the world. If you're going to drill it, make sure you drill straight on.

I also wouldn't blame your dad for it, You should've had the common sense to feel it wasn't threading in correctly and stopped.

[Pop's C-10]

Try sloting it with a cutting wheel & put a flat head in tha slot & put a pair of vise grips on tha shaft of tha flat head..

[72lb4x4]

If you sheared it off, I'd guess its pretty tight.

Rather than removing metal, I'd weld a nut or a bolt on. I'd hold a nut on the end and weld in the hole rather than thread the nut on.

You'll never run out of metal if you're adding more, but if you keep grinding it off, you may end up with little to work with.

If you have a welder, you have to crank up the voltage. You can't leave it at the low sheet metal setting...

[71swb4x4]

Here is what worked for me: http://67-72chevytrucks.com/vboard/s...d.php?t=427002

[ECU PIRATE]

Thanks guys.......... I had to vent for awhile when I made that post. I have about 3/16 - 1/4" of thread showing on the outside of the block. I went with 2 1/2 " Bolts first and I thought they were going to snap off. Went to 3" until the f'ing bolt snapped off. Safe to say it is the last time I make that mistake. Why I didn't double check the thread tap in driver's side holes is beyond me right now...........rookie move for sure. I am going to plan aheas before try and back the bolt out. All sound like good resolutions. Same thing happened to me on my driver's side front seat bolt. Vise grips did not work so now we may be forced to weld a nut on the left over thread to back it out. Right over my gas tank of all places. Did not have these problems on my camaro. So frustrated right now I am tempted to sell the truck and put that money back in the camaro.

[ozark]

weld a flat washer on it first then weld the nut to the washer, gives you a better weld and more area to weld to.

[72lb4x4]

The washer thing is a good idea...

[justinburnett]

I like that washer idea too. Put some good penetrating oil on there overnight after the welding and let it sit overnight. Go easy.
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[thun]

I just had a similar problem and I soaked it in penetrating oil overnight then used a left handed drill bit (they drill in reverse) It drilled in and unscrewed the bolt right out as I was drilling. Was a much smaller bolt but it might worked great.

[rayfinseats]

Hit it in the center with a center punch and use titanium drill bits. Start with 1/8 then go to 3/16 then 1/4 ETC, until you get to about where the threads are, then the threads will just fall out. Then run a tap through it just to clean it up.